Assume that the radius of the first Bohr orbit of hydrogen atom is $0.6 \mathring{A}$. The radius of the third Bohr orbit of $He^{+}$ is $..................$ picometer. (Nearest Integer)
- A$170$
- B$180$
- C$270$
- D$250$
Explore More
Similar Questions
The velocity of an electron in the $3^{rd}$ excited state of $Be^{3+}$ is .......
Medium
View SolutionWhat is the radius of the fourth orbit of $Be^{3+}$ (in $pm$)?
The figure that is not a direct manifestation of the quantum nature of atoms is:
If $P.E.$ of $3^{rd}$ shell is $-20 \ eV/atom$,then find the $I.P.$ of the $3^{rd}$ shell of that element.
Difficult
View SolutionThe energy of an electron in the $3^{rd}$ orbit of $H$-atom (in $J$) is approximately:
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo